Your Bright Days with Samyang 50mm- Hybrid aspherical lens (H-ASP) and glass aspherical lens (ASP)- UMC technology of Samyang Optics- Wide and soft focus gear ring- Circular aperture with 8 bladesStandard Manual Focus Photo LensSamyang Optics 50mm F1.4 AS UMC is a standard manual focus photo lens designed for full frame image sensor.Optical FeaturesSamyang 50mm F1.4 AS UMC is a manual focus lens with a low F number. You may control the lens precisely when shooting under various exposure environment including relatively dark or too bright situations.This lens features 9 lenses in 6 groups including 1 glass aspherical lens (ASP), and 1 hybrid aspherical lens (H-ASP) to offer high resolution. Especially, H-ASP minimizes color aberration to realize exceptional image quality and high contrast for center and corner of image even when aperture is fully opened. Ultra Multi Coating (UMC) technology of Samyang Optics optimizes the light penetration and minimizes flare and ghost. With such optical construction, it has 0.45m of minimum focal length to take photos of subjects in near distance.Hardware FeaturesThere are 8 aperture blades designed to be almost as a full circle when aperture is closed which expresses starlike ray clearly and beautifully. The frame of the lens is compact and solid since it is made of high-strength aluminum alloy so you can create trustworthy images. Also, detachable petal-shaped lens hood minimizes flare and ghost by sheltering lens from unnecessary lights.Available for 10 camera mounts: Canon, Canon M, Nikon, Pentax, Sony ∝, Sony E, Fujifilm X, Samsung NX, Four-Thirds, MFT.